
<header>

    <nav class="navbar navbar-default">
        <div class="container-fluid">
            <!-- logo -->
            <div class="navbar-header">
               <a class="navbar-brand" href="#">logo</a>
            </div>

            <!-- Collect the nav links, forms, and other content for toggling -->
            <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                <ul class="nav navbar-nav navbar-right">
                    <li><a href="#">超级管理员</a></li>

                    <li class="dropdown">
                        <a class="dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">
                            张三 <span class="caret"></span>
                        </a>
                        <ul class="dropdown-menu">
                            <li><a href="#">个人信息</a></li>
                            <li><a href="#">切换账号</a></li>
                            <li><a href="#">退出</a></li>
                        </ul>
                    </li>

                    <li><a href="#">消息</a></li>
                </ul>
            </div><!-- /.navbar-collapse -->
        </div><!-- /.container-fluid -->
    </nav>


</header>